def build_elasticsearch_search_with_aggregation(
self, filter_query: ES_Q) -> Optional[TransactionSearch]:
# Create the initial search using filters
search = TransactionSearch().filter(filter_query)
# Check number of unique terms (buckets) for performance and restrictions on maximum buckets allowed
bucket_count = get_number_of_unique_terms(filter_query,
f"{self.agg_key}.hash")
if bucket_count == 0:
return None
# Add 100 to make sure that we consider enough records in each shard for accurate results
group_by_agg_key = A("terms",
field=self.agg_key,
size=bucket_count,
shard_size=bucket_count + 100)
sum_aggregations = get_scaled_sum_aggregations(self.obligation_column)
sum_field = sum_aggregations["sum_field"]
search.aggs.bucket("group_by_agg_key",
group_by_agg_key).metric("sum_field", sum_field)
# Set size to 0 since we don't care about documents returned
search.update_from_dict({"size": 0})
return search
def build_elasticsearch_search_with_aggregations(
self, filter_query: ES_Q) -> Optional[TransactionSearch]:
"""
Using the provided ES_Q object creates a TransactionSearch object with the necessary applied aggregations.
"""
# Create the filtered Search Object
search = TransactionSearch().filter(filter_query)
sum_aggregations = get_scaled_sum_aggregations(
"generated_pragmatic_obligation", self.pagination)
# Need to handle high cardinality categories differently; this assumes that the Search object references
# an Elasticsearch cluster that has a "routing" equal to "self.category.agg_key"
if self.category.name in self.high_cardinality_categories:
# 10k is the maximum number of allowed buckets
size = self.pagination.upper_limit
shard_size = size
sum_bucket_sort = sum_aggregations["sum_bucket_truncate"]
group_by_agg_key_values = {"order": {"sum_field": "desc"}}
else:
# Get count of unique buckets; terminate early if there are no buckets matching criteria
bucket_count = get_number_of_unique_terms(
filter_query, f"{self.category.agg_key}.hash")
if bucket_count == 0:
return None
else:
# Add 100 to make sure that we consider enough records in each shard for accurate results;
# Only needed for non high-cardinality fields since those are being routed
size = bucket_count
shard_size = bucket_count + 100
sum_bucket_sort = sum_aggregations["sum_bucket_sort"]
group_by_agg_key_values = {}
if shard_size > 10000:
logger.warning(
f"Max number of buckets reached for aggregation key: {self.category.agg_key}."
)
raise ElasticsearchConnectionException(
"Current filters return too many unique items. Narrow filters to return results."
)
# Define all aggregations needed to build the response
group_by_agg_key_values.update({
"field": self.category.agg_key,
"size": size,
"shard_size": shard_size
})
group_by_agg_key = A("terms", **group_by_agg_key_values)
sum_field = sum_aggregations["sum_field"]
# Apply the aggregations to the TransactionSearch object
search.aggs.bucket("group_by_agg_key", group_by_agg_key).metric(
"sum_field", sum_field).pipeline("sum_bucket_sort",
sum_bucket_sort)
# Set size to 0 since we don't care about documents returned
search.update_from_dict({"size": 0})
return search
def extend_elasticsearch_search_with_sub_aggregation(
self, search: AwardSearch):
"""
This template method is called if the `self.sub_agg_key` is supplied, in order to post-process the query and
inject a sub-aggregation on a secondary dimension (that is subordinate to the first agg_key's dimension).
Example: Subtier Agency spending rolled up to Toptier Agency spending
"""
sub_bucket_count = get_number_of_unique_terms_for_awards(
self.filter_query, f"{self.sub_agg_key}.hash")
size = sub_bucket_count
shard_size = sub_bucket_count + 100
sub_group_by_sub_agg_key_values = {}
if shard_size > 10000:
raise ForbiddenException(
"Current filters return too many unique items. Narrow filters to return results or use downloads."
)
# Sub-aggregation to append to primary agg
sub_group_by_sub_agg_key_values.update({
"field":
self.sub_agg_key,
"size":
size,
"shard_size":
shard_size,
"order": [
{
self.sort_column_mapping[self.pagination.sort_key]:
self.pagination.sort_order
},
{
self.sort_column_mapping["id"]: self.pagination.sort_order
},
],
})
sub_group_by_sub_agg_key = A("terms",
**sub_group_by_sub_agg_key_values)
sum_aggregations = {
mapping: get_scaled_sum_aggregations(mapping)
for mapping in self.sum_column_mapping.values()
}
# Append sub-agg to primary agg, and include the sub-agg's sum metric aggs too
search.aggs[self.agg_group_name].bucket(self.sub_agg_group_name,
sub_group_by_sub_agg_key)
for field, sum_aggregations in sum_aggregations.items():
search.aggs[self.agg_group_name].aggs[
self.sub_agg_group_name].metric(field,
sum_aggregations["sum_field"])
def build_elasticsearch_search_with_aggregations(
self) -> Optional[AwardSearch]:
"""
Using the provided ES_Q object creates an AwardSearch object with the necessary applied aggregations.
"""
# Create the initial search using filters
search = AwardSearch().filter(self.filter_query)
# As of writing this the value of settings.ES_ROUTING_FIELD is the only high cardinality aggregation that
# we support. Since the Elasticsearch clusters are routed by this field we don't care to get a count of
# unique buckets, but instead we use the upper_limit and don't allow an upper_limit > 10k.
if self.bucket_count == 0:
return None
elif self.agg_key == settings.ES_ROUTING_FIELD:
size = self.bucket_count
shard_size = size
group_by_agg_key_values = {
"order": [
{
self.sort_column_mapping[self.pagination.sort_key]:
self.pagination.sort_order
},
{
self.sort_column_mapping["id"]:
self.pagination.sort_order
},
]
}
bucket_sort_values = None
else:
size = self.bucket_count
shard_size = self.bucket_count + 100
group_by_agg_key_values = {}
bucket_sort_values = {
"sort": [
{
self.sort_column_mapping[self.pagination.sort_key]: {
"order": self.pagination.sort_order
}
},
{
self.sort_column_mapping["id"]: {
"order": self.pagination.sort_order
}
},
]
}
if shard_size > 10000:
raise ForbiddenException(
"Current filters return too many unique items. Narrow filters to return results or use downloads."
)
# Define all aggregations needed to build the response
group_by_agg_key_values.update({
"field": self.agg_key,
"size": size,
"shard_size": shard_size
})
group_by_agg_key = A("terms", **group_by_agg_key_values)
sum_aggregations = {
mapping: get_scaled_sum_aggregations(mapping, self.pagination)
for mapping in self.sum_column_mapping.values()
}
search.aggs.bucket(self.agg_group_name, group_by_agg_key)
for field, sum_aggregations in sum_aggregations.items():
search.aggs[self.agg_group_name].metric(
field, sum_aggregations["sum_field"])
if bucket_sort_values:
bucket_sort_aggregation = A("bucket_sort", **bucket_sort_values)
search.aggs[self.agg_group_name].pipeline("pagination_aggregation",
bucket_sort_aggregation)
# If provided, break down primary bucket aggregation into sub-aggregations based on a sub_agg_key
if self.sub_agg_key:
self.extend_elasticsearch_search_with_sub_aggregation(search)
# Set size to 0 since we don't care about documents returned
search.update_from_dict({"size": 0})
return search
def obtain_recipient_totals(recipient_id, children=False, year="latest"):
"""Extract the total amount and transaction count for the recipient_hash given the time frame
Args:
recipient_id: string of hash(duns, name)-[recipient-level]
children: whether or not to group by children
year: the year the totals/counts are based on
Returns:
list of dictionaries representing hashes and their totals/counts
"""
filters = reshape_filters(recipient_id=recipient_id, year=year)
filter_query = QueryWithFilters.generate_transactions_elasticsearch_query(
filters)
search = TransactionSearch().filter(filter_query)
if children:
group_by_field = "recipient_agg_key"
elif recipient_id[-2:] == "-P":
group_by_field = "parent_recipient_hash"
else:
group_by_field = "recipient_hash"
bucket_count = get_number_of_unique_terms_for_transactions(
filter_query, f"{group_by_field}.hash")
if bucket_count == 0:
return []
# Not setting the shard_size since the number of child recipients under a
# parent recipient will not exceed 10k
group_by_recipient = A("terms", field=group_by_field, size=bucket_count)
sum_obligation = get_scaled_sum_aggregations(
"generated_pragmatic_obligation")["sum_field"]
filter_loans = A("filter", terms={"type": list(loan_type_mapping.keys())})
sum_face_value_loan = get_scaled_sum_aggregations(
"face_value_loan_guarantee")["sum_field"]
search.aggs.bucket("group_by_recipient", group_by_recipient)
search.aggs["group_by_recipient"].metric("sum_obligation", sum_obligation)
search.aggs["group_by_recipient"].bucket("filter_loans", filter_loans)
search.aggs["group_by_recipient"]["filter_loans"].metric(
"sum_face_value_loan", sum_face_value_loan)
response = search.handle_execute()
response_as_dict = response.aggs.to_dict()
recipient_info_buckets = response_as_dict.get("group_by_recipient",
{}).get("buckets", [])
result_list = []
for bucket in recipient_info_buckets:
result = {}
if children:
recipient_info = json.loads(bucket.get("key"))
hash_with_level = recipient_info.get("hash_with_level") or None
result = {
"recipient_hash":
hash_with_level[:-2] if hash_with_level else None,
"recipient_unique_id": recipient_info.get("unique_id"),
"recipient_name": recipient_info.get("name"),
}
loan_info = bucket.get("filter_loans", {})
result.update({
"total_obligation_amount":
int(bucket.get("sum_obligation", {"value": 0})["value"]) /
Decimal("100"),
"total_obligation_count":
bucket.get("doc_count", 0),
"total_face_value_loan_amount":
int(loan_info.get("sum_face_value_loan", {"value": 0})["value"]) /
Decimal("100"),
"total_face_value_loan_count":
loan_info.get("doc_count", 0),
})
result_list.append(result)
return result_list
